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Method for recovering nickel, cobalt, manganese and iron by roasting and leaching nickel oxide ore

A technology of nickel oxide ore and nickel-cobalt-manganese, which is applied in the field of metallurgy, can solve the problems of nickel and cobalt loss, achieve the effects of low cost, reasonable process design, and large-scale industrial production

Inactive Publication Date: 2013-02-20
连云港市东茂矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the first step of the process, that is, during the pre-neutralization with calcium oxide or calcium oxyoxide to remove iron and aluminum, due to adsorption co-precipitation with iron and aluminum, and excessive local alkalinity, precious A large loss of nickel and cobalt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, a kind of method for reclaiming nickel-cobalt-manganese ferromanganese by roasting and leaching nickel oxide ore, its steps are as follows:

[0030] (1) Ball milling: The nickel oxide ore is ball-milled in a wet ball mill until the fineness of the ore powder is -100 mesh, accounting for more than 60%, and the ore powder is obtained;

[0031] (2) Mixing: add 5% of the mass of the mineral powder to the mineral powder; the additive is composed of a mixture of the first component and the second component with a mass ratio of 1:4, and the first component is selected from chlorinated At least one of sodium, magnesium chloride or calcium chloride, the second component is selected from at least one of coke powder, coke, coal or carbon; to obtain a mineral powder mixture;

[0032] (3) Balling: add an appropriate amount of water to the mineral powder mixture to form mineral balls;

[0033] (4) Roasting: Put the ore balls into the roaster kiln and roast at 800°C for...

Embodiment 2

[0037] Embodiment 2, a kind of method for reclaiming nickel-cobalt-manganese ferromanganese by roasting and leaching nickel oxide ore, its steps are as follows:

[0038] (1) Ball milling: The nickel oxide ore is ball-milled in a wet ball mill until the fineness of the ore powder is -100 mesh, accounting for more than 60%, and the ore powder is obtained;

[0039] (2) Mixing: add an additive of 30% of the mass of the mineral powder to the mineral powder; the additive is composed of a mixture of the first component and the second component with a mass ratio of 1:20, and the first component is selected from chlorinated At least one of sodium, magnesium chloride or calcium chloride, the second component is selected from at least one of coke powder, coke, coal or carbon; to obtain a mineral powder mixture;

[0040] (3) Balling: add an appropriate amount of water to the mineral powder mixture to form mineral balls;

[0041](4) Roasting: Put the ore balls into the roaster kiln and ro...

Embodiment 3

[0045] Embodiment 3, a kind of method for reclaiming nickel-cobalt-manganese ferromanganese by roasting and leaching nickel oxide ore, its steps are as follows:

[0046] (1) Ball milling: The nickel oxide ore is ball-milled in a wet ball mill until the fineness of the ore powder is -100 mesh, accounting for more than 60%, and the ore powder is obtained;

[0047] (2) Mixing: add 15% of the mass of the mineral powder to the mineral powder; the additive is composed of a mixture of the first component and the second component with a mass ratio of 1:100, and the first component is selected from chlorinated At least one of sodium, magnesium chloride or calcium chloride, the second component is selected from at least one of coke powder, coke, coal or carbon; to obtain a mineral powder mixture;

[0048] (3) Balling: add an appropriate amount of water to the mineral powder mixture to form mineral balls;

[0049] (4) Roasting: Put the ore balls into the roaster kiln and roast at 1100°C...

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PUM

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Abstract

The invention relates to a method for recovering nickel, cobalt, manganese and iron by roasting and leaching nickel oxide ore. The method includes: ball milling the nickel oxide ore to obtain mineral powder; then adding mineral powder additives into the mineral powder; balling, roasting and conducting leaching processing on roasted mineral materials through water or diluted hydrochloric acid to obtain leaching agent of the nickel oxide ore; adding oxidant into the leaching agent, processing to obtain sediment of cobalt oxide and manganite, adding calcium oxide or sodium hydroxide into filtrate to conduct processing to obtain mixture sediment containing nickel and iron. The method is reasonable in process design and good in operability and can use mineral resource effectively and achieve large-scale industrial production; achieves recycling of four elements of nickel, cobalt, manganese and iron in leaching agent of the nickel oxide; and saves production cost.

Description

technical field [0001] The invention relates to a metallurgical method, in particular to a method for recovering nickel-cobalt-manganese ferromanganese by roasting and leaching nickel oxide ore. Background technique [0002] Nickel oxide ore is a symbiotic mineral containing various metal elements. It contains iron, nickel, cobalt, manganese, aluminum and magnesium, among others. In order to recycle these definite metal elements, methods such as pyrometallurgy and hydrometallurgy have been adopted. The traditional pyrometallurgical treatment technologies of nickel oxide ore include rotary kiln drying reduction-electric furnace reduction smelting to produce ferronickel; sintering-blast furnace sulfidation smelting to produce low-matte nickel; and sintering-blast furnace reduction smelting to produce nickel pig iron. Rotary kiln drying and pre-reduction electric furnace reduction smelting is a classic process for processing nickel oxide ore. The process is as follows: the ni...

Claims

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Application Information

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IPC IPC(8): C22B1/02C22B3/06C22B3/04C22B3/46C22B23/00C22B47/00C21B15/00
Inventor 董书通
Owner 连云港市东茂矿业有限公司
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